| article html file updated | 6 February 2020 00:49 CET | Update | https://www.mdpi.com/1424-2818/5/1/99 |
| article html file updated | 8 May 2019 07:45 CEST | Update | N/A |
| article html file updated | 20 March 2019 19:19 CET | Update | N/A |
| article html file updated | 17 June 2015 07:08 CEST | Update | N/A |
| article html file updated | 25 March 2013 11:07 CET | Original file | N/A |
| article xml uploaded. | 25 March 2013 11:07 CET | Original file | https://www.mdpi.com/1424-2818/5/1/99/xml |
| article pdf uploaded. | 12 March 2013 16:57 CET | Updated version of record | https://www.mdpi.com/1424-2818/5/1/99/pdf |
| article pdf uploaded. | 5 March 2013 14:41 CET | Version of Record | https://www.mdpi.com/1424-2818/5/1/99/pdf-vor |
